on- line computer services, namely, on-line personalized information services; providing on-line services for the search, retrieval, indexing and organization of data on electronic communication networks; information extraction and data mining; providing access to proprietary collections of information and databases; creating indexes of information, web sites and other information sources; providing information concerning a wide range of text, electronic documents, databases, graphics and audiovisual information accessible via computer networks; providing electronic mail and Workgroup communications services